Regressions on trunk at revision 217112 vs revision 217073

[H.J. Lu x32]

New failures:
FAIL: g++.dg/ipa/devirt-42.C  -std=gnu++14  scan-tree-dump-times optimized "return 2" 2
FAIL: g++.dg/ipa/devirt-47.C  -std=gnu++14  scan-ipa-dump-times inline "Discovered a virtual call to a known target[^\\n]*C::_ZTh" 1

New passes:
FAIL: g++.dg/ipa/devirt-40.C  -std=gnu++11  scan-tree-dump fre2 "converting indirect call to function virtual UnicodeString"
FAIL: g++.dg/ipa/devirt-40.C  -std=gnu++1y  scan-tree-dump fre2 "converting indirect call to function virtual UnicodeString"
FAIL: g++.dg/ipa/devirt-40.C  -std=gnu++98  scan-tree-dump fre2 "converting indirect call to function virtual UnicodeString"
FAIL: g++.dg/ipa/devirt-42.C  -std=gnu++1y  scan-tree-dump-times optimized "return 2" 2
FAIL: g++.dg/ipa/devirt-47.C  -std=gnu++1y  scan-ipa-dump-times inline "Discovered a virtual call to a known target[^\\n]*C::_ZTh" 1